Metallic compound.



' tallic compound purposes UNITED STATES PATENT OFFICE.

HERBERT B. COHO, OF MOUNT VERNON, NEW YORK.

METALLIC COMPOUND.

No Drawing.

alloy held in suspension with needles (sul-- fid) "antimony.

The object of my invention is to produce a compound of the character described that may be readily 'commin led, economica lly produced, and which wil result in a methat is susceptible of varied and extensive commercial utility.

A further object thereof is to produce an alloy of lead and copper commingled with sulfid of antimony resulting in a very hard :compound, and which when polished has the appearance of and may be used as a substitute for brass. And a still further object of my invention is to produce a metallic comound of thecharacter described in which the fluidity of the mixture is greatly increased to render same susceptible for small castings which are now madeof brass.

To these ends, my invention includes the combination of component ingredients to be hereinafter described and more particularly pointed out in the claims.

In the preparation of my com ound, I employ varied percentages of lea copper and needles antimony (sulfid), the various proportions being determined by the hardness of the compound desired. The exact proportions of lead and co per are determined by the specific result esired and may be varied within a wide range. For some nine parts of lead may be employed with one part of copper, while in Specification of Letters Patent.

Patented May 11, 1915.

Application filed September 22, 1914. Serial No. aeaaeo.

. other instances nine parts of copper and one part of lead is referred. The pro ortions of antimony sul d employed is regu ated by the de ees of hardness desired, as in a mixture o pounds of copper and fifty pounds of lead from 5 pounds to 25 pounds of needles antimony (sulfid) may be used. It has been found that for a bearin metal, 50 pounds of copper and 50 poun s of lead commingled with 5 pounds of antimony sulfid produces desirable results, while for imitation brass the proportion of copper should be increased, an for packing metal the lead is increased and the copper ecreased. The elements are thoroughly fused and commingled, and the resultant product may be readily cast and used as an efficient substitute for brass castings and as an antifriction bearing metal.

I have also found that by the'addition of a desired quantity of tin in my compound, the same maybe successfully employed as a substitute for Babbitt metal with advantageous results.

When it is desired to increase the fluidity of the fused compound to facilitate its castin into small articles, a small addition of so ium may be made in the preparation of the compound.

Having thus described my invention, what I claim as new and desire to be secured by Letters Patent, is.-

1. A metallic compound comprising lead HERBERT B. COHO. Witnesses: Y

H. D. Bnrmsrorm, C. R. BaBsoN. 

